使用 gattool,我可以找到与我的智能手表手柄相对应的 UUID,如下所示:
Device: MAC address
Name: MS1020
Alias: MS1020
Paired: yes
Trusted: yes
Blocked: no
Connected: no
LegacyPairing: no
UUID: Generic Access Profile (00001800-0000-1000-8000-00805f9b34fb)
UUID: Unknown (0000cc00-0000-1000-8000-00805f9b34fb)
UUID: Tencent Holdings Limited (0000fee7-0000-1000-8000-00805f9b34fb)
UUID: Vendor specific (00010203-0405-0607-0809-0a0b0c0d1912)
ManufacturerData Key: 0x0211
ManufacturerData Value:
[LE]> characteristics
handle: 0x0002, char properties: 0x12, char value handle: 0x0003, uuid: 2b120008-0600-072a-0100-050200042a00
handle: 0x0004, char properties: 0x02, char value handle: 0x0005, uuid: 0708090a-0b0c-0d2b-1200-080600072a01
handle: 0x0007, char properties: 0x06, char value handle: 0x0008, uuid: 00010203-0405-0607-0809-0a0b0c0d2b12
handle: 0x000b, char properties: 0x08, char value handle: 0x000c, uuid: 0000fec7-0000-1000-8000-00805f9b34fb
handle: 0x000d, char properties: 0x20, char value handle: 0x000e, uuid: 0000fec8-0000-1000-8000-00805f9b34fb
handle: 0x0010, char properties: 0x02, char value handle: 0x0011, uuid: 0000fec9-0000-1000-8000-00805f9b34fb
handle: 0x0012, char properties: 0x32, char value handle: 0x0013, uuid: 0000fea1-0000-1000-8000-00805f9b34fb
handle: 0x0015, char properties: 0x2a, char value handle: 0x0016, uuid: 0000fea2-0000-1000-8000-00805f9b34fb
handle: 0x0019, char properties: 0x0a, char value handle: 0x001a, uuid: 0000cc02-0000-1000-8000-00805f9b34fb
handle: 0x001b, char properties: 0x12, char value handle: 0x001c, uuid: 0000cc03-0000-1000-8000-00805f9b34fb
handle: 0x001e, char properties: 0x12, char value handle: 0x001f, uuid: 0000cc04-0000-1000-8000-00805f9b34fb
handle: 0x0021, char properties: 0x1a, char value handle: 0x0022, uuid: 0000cc05-0000-1000-8000-00805f9b34fb
handle: 0x0024, char properties: 0x08, char value handle: 0x0025, uuid: 0000cc06-0000-1000-8000-00805f9b34fb
[LE]> primary
attr handle: 0x0001, end grp handle: 0x0005 uuid: 00001800-0000-1000-8000-00805f9b34fb
attr handle: 0x0006, end grp handle: 0x0009 uuid: 00010203-0405-0607-0809-0a0b0c0d1912
attr handle: 0x000a, end grp handle: 0x0017 uuid: 0000fee7-0000-1000-8000-00805f9b34fb
attr handle: 0x0018, end grp handle: 0x0025 uuid: 0000cc00-0000-1000-8000-00805f9b34fb
[LE]> char-desc
handle: 0x0001, uuid: 00002800-0000-1000-8000-00805f9b34fb
handle: 0x0002, uuid: 00002803-0000-1000-8000-00805f9b34fb
handle: 0x0003, uuid: 00002a00-0000-1000-8000-00805f9b34fb
handle: 0x0004, uuid: 00002803-0000-1000-8000-00805f9b34fb
handle: 0x0005, uuid: 00002a01-0000-1000-8000-00805f9b34fb
handle: 0x0006, uuid: 00002800-0000-1000-8000-00805f9b34fb
handle: 0x0007, uuid: 00002803-0000-1000-8000-00805f9b34fb
handle: 0x0008, uuid: 00010203-0405-0607-0809-0a0b0c0d2b12
handle: 0x0009, uuid: 00002901-0000-1000-8000-00805f9b34fb
handle: 0x000a, uuid: 00002800-0000-1000-8000-00805f9b34fb
handle: 0x000b, uuid: 00002803-0000-1000-8000-00805f9b34fb
handle: 0x000c, uuid: 0000fec7-0000-1000-8000-00805f9b34fb
handle: 0x000d, uuid: 00002803-0000-1000-8000-00805f9b34fb
handle: 0x000e, uuid: 0000fec8-0000-1000-8000-00805f9b34fb
handle: 0x000f, uuid: 00002902-0000-1000-8000-00805f9b34fb
handle: 0x0010, uuid: 00002803-0000-1000-8000-00805f9b34fb
handle: 0x0011, uuid: 0000fec9-0000-1000-8000-00805f9b34fb
handle: 0x0012, uuid: 00002803-0000-1000-8000-00805f9b34fb
handle: 0x0013, uuid: 0000fea1-0000-1000-8000-00805f9b34fb
handle: 0x0014, uuid: 00002902-0000-1000-8000-00805f9b34fb
handle: 0x0015, uuid: 00002803-0000-1000-8000-00805f9b34fb
handle: 0x0016, uuid: 0000fea2-0000-1000-8000-00805f9b34fb
handle: 0x0017, uuid: 00002902-0000-1000-8000-00805f9b34fb
handle: 0x0018, uuid: 00002800-0000-1000-8000-00805f9b34fb
handle: 0x0019, uuid: 00002803-0000-1000-8000-00805f9b34fb
handle: 0x001a, uuid: 0000cc02-0000-1000-8000-00805f9b34fb
handle: 0x001b, uuid: 00002803-0000-1000-8000-00805f9b34fb
handle: 0x001c, uuid: 0000cc03-0000-1000-8000-00805f9b34fb
handle: 0x001d, uuid: 00002902-0000-1000-8000-00805f9b34fb
handle: 0x001e, uuid: 00002803-0000-1000-8000-00805f9b34fb
handle: 0x001f, uuid: 0000cc04-0000-1000-8000-00805f9b34fb
handle: 0x0020, uuid: 00002902-0000-1000-8000-00805f9b34fb
handle: 0x0021, uuid: 00002803-0000-1000-8000-00805f9b34fb
handle: 0x0022, uuid: 0000cc05-0000-1000-8000-00805f9b34fb
handle: 0x0023, uuid: 00002902-0000-1000-8000-00805f9b34fb
handle: 0x0024, uuid: 00002803-0000-1000-8000-00805f9b34fb
handle: 0x0025, uuid: 0000cc06-0000-1000-8000-00805f9b34fb
但是,我很困惑,如何确定哪个句柄适用于哪个 BLE 功能。例如,https ://www.bluetooth.com/specifications/gatt/characteristics/ 上的页面显示电池电量规格功能位于 0x2A19。但是,我不知道在哪里或如何在上面的 char-desc 输出中获取与 0x2A19 对应的 UUID。我怎么得到这个?
编辑:感谢答案中非常有用的描述(两者都非常好)。我已经添加了上面的特征信息。我还有一些额外的信息可能有用也可能没用。
通过反复试验,我能够确定血压测量值(从我按下表带上的按钮时获得)是从通知句柄的第三个和第四个条目(十六进制格式)获得的(见输出):
Notification handle = 0x001f value: f3 14 73 4d 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
但是,当什么都不做时,即没有按下任何按钮,我得到:
[LE]> char-read-hnd 0x001f
Characteristic value/descriptor: 07 00 04 4e 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
相同的通知句柄在第 11 个条目中给出了心率(按下该按钮时):
Notification handle = 0x001f value: 20 00 00 00 00 00 00 00 00 00 63 00 00 00 00 00 00 00 00 00
然而,在所有情况下,第一个条目也发生了变化(并且它们似乎对操作和不作为是唯一的)。
例如,我想知道我是否可以访问这些信息,以及如何触发 BP 测量。再次感谢!
如果我的问题不清楚或需要更多信息,请在评论中告诉我。我很乐意根据需要提供更多信息。感谢您花时间阅读和提出建议/指示。